Python threshold_yen Examples

Example #1

File: test_thresholding.py Project: Gildus/scikit-image

def test_yen_camera_image():
    camera = skimage.img_as_ubyte(data.camera())
    assert 197 < threshold_yen(camera) < 199

Example #2

File: test_thresholding.py Project: Gildus/scikit-image

def test_yen_coins_image():
    coins = skimage.img_as_ubyte(data.coins())
    assert 109 < threshold_yen(coins) < 111

Example #3

File: test_thresholding.py Project: waders909/scikit-image

def test_yen_camera_image_histogram():
    camera = util.img_as_ubyte(data.camera())
    hist = histogram(camera.ravel(), 256, source_range='image')
    assert 145 < threshold_yen(hist=hist) < 147

Example #4

 def test_yen_blank_max(self):
     image = np.empty((5, 5), dtype=np.uint8)
     image.fill(255)
     assert threshold_yen(image) == 255

Example #5

File: test_thresholding.py Project: Gildus/scikit-image

 def test_yen_arange(self):
     image = np.arange(256)
     assert threshold_yen(image) == 127

Example #6

File: test_thresholding.py Project: Gildus/scikit-image

 def test_yen_blank_zero(self):
     image = np.zeros((5, 5), dtype=np.uint8)
     assert threshold_yen(image) == 0

Example #7

 def test_yen_negative_int(self):
     image = self.image - 2
     assert threshold_yen(image) == 0

Example #8

File: test_thresholding.py Project: Gildus/scikit-image

 def test_yen_negative_int(self):
     image = self.image - 2
     assert threshold_yen(image) == 0

Example #9

def test_yen_coins_image_as_float():
    coins = skimage.img_as_float(data.coins())
    assert 0.43 < threshold_yen(coins) < 0.44

Example #10

 def test_yen(self):
     assert threshold_yen(self.image) == 2

Example #11

def test_yen_coins_image():
    coins = skimage.img_as_ubyte(data.coins())
    assert 109 < threshold_yen(coins) < 111

Example #12

def test_yen_camera_image():
    camera = skimage.img_as_ubyte(data.camera())
    assert 197 < threshold_yen(camera) < 199

Example #13

File: test_thresholding.py Project: waders909/scikit-image

def test_yen_camera_image_counts():
    camera = util.img_as_ubyte(data.camera())
    counts, bin_centers = histogram(camera.ravel(), 256, source_range='image')
    assert 145 < threshold_yen(hist=counts) < 147

Example #14

File: test_thresholding.py Project: Gildus/scikit-image

def test_yen_coins_image_as_float():
    coins = skimage.img_as_float(data.coins())
    assert 0.43 < threshold_yen(coins) < 0.44

Example #15

 def test_yen_float_image(self):
     image = np.float64(self.image)
     assert 2 <= threshold_yen(image) < 3

Example #16

File: test_thresholding.py Project: Gildus/scikit-image

 def test_yen(self):
     assert threshold_yen(self.image) == 2

Example #17

 def test_yen_arange(self):
     image = np.arange(256)
     assert threshold_yen(image) == 127

Example #18

File: test_thresholding.py Project: Gildus/scikit-image

 def test_yen_float_image(self):
     image = np.float64(self.image)
     assert 2 <= threshold_yen(image) < 3

Example #19

 def test_yen_binary(self):
     image = np.zeros([2, 256], dtype=np.uint8)
     image[0] = 255
     assert threshold_yen(image) < 1

Example #20

File: test_thresholding.py Project: Gildus/scikit-image

 def test_yen_binary(self):
     image = np.zeros([2, 256], dtype=np.uint8)
     image[0] = 255
     assert threshold_yen(image) < 1

Example #21

 def test_yen_blank_zero(self):
     image = np.zeros((5, 5), dtype=np.uint8)
     assert threshold_yen(image) == 0

Example #22

File: test_thresholding.py Project: Gildus/scikit-image

 def test_yen_blank_max(self):
     image = np.empty((5, 5), dtype=np.uint8)
     image.fill(255)
     assert threshold_yen(image) == 255

Example #23

File: test_thresholding.py Project: waders909/scikit-image

def test_yen_camera_image():
    camera = util.img_as_ubyte(data.camera())
    assert 145 < threshold_yen(camera) < 147